Subtract 18/5 from 8/84
1st number: 8/84, 2nd number: 3 3/5
8/84 - 18/5 is -368/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 5 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
8/84 = 8 × 5/84 × 5 = 40/420 - Likewise, for the 2nd fraction, since 5 × 84 = 420,
18/5 = 18 × 84/5 × 84 = 1512/420 - Subtract the two like fractions:
40/420 - 1512/420 = 40 - 1512/420 = -1472/420 - After reducing the fraction, the answer is -368/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/84-18/5 8/84-36/5 8/84-18/10 24/84-18/5 8/84-54/5 8/84-18/15 40/84-18/5 8/84-90/5 8/84-18/25 56/84-18/5 8/84-18/35